Nut-lock.



4 PATENTED'JULY 2, 1907. H. zr. FISCHER.

NUT LOCK. APPLICATION FILED AUG.27, 1906 UNITED STATES PATEN OFFICE.

HENRY J. FISCHER, OF MONMOUTH, ILLINOIS, ASSIGNOR OF ONE-THIRD TO WILLIAM G. ABBOTT AND ONE-THIRD TO JOHN S. BROWN, BOTH OF MOQIMOUTH, ILLINOIS.

NUT-LOCK.

Specification of Letters Patent.

Patented July 2, 1907;

Application filed August 27,1906. Serial No. 332,184.

To all whom i! may concern.

Be it known that I, HENRY J. Frscnnn, a citizen of the United States, residing at Wonmouth in the county of Warren and State of Illinois, have invented new 5 and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to certain new and useful improvements in a nut lock, to be used in connection with bolts, in securing together the separate parts of machinery, or other devices, the object in view being to provide a bolt and nut locking device that will effectually lock, and prevent the tap or nut getting loose on the bolt, and I do declare the following to be a full,

clear, and exact description of the same, such as will enable others skiiled in the art to which it appertains, to make and use the same.

The novel construction and arrangement of the several parts are hereinafter more fully described and then specifically defined in the appended claims.

In the drawings and figures of reference marked thereon, which form a part of this specification, like figures indicate like parts throughout the several views.

Figure 1 represents a side view, looking toward the corner edge of the nut. Fig. 2 is a view looking toward the point of the bolt, and the outer face of the lock nut, representing the nut partially broken away. Fig. 3 is a perspective view of a spring washer used in connection with the nut. Fig. 4 is a perspective view of the lock nut.

Reference now being had to the accompanying drawings by numerals, 1 represents the nut, having the depressions 2, cut or pressed in the face of the nut diagonally across from each'corner; this location of the depression is deemed preferable, as the nut is thicker and stronger at this part; the nut may have one or more of such depressions in its face as is considered necessary, the nut being herein shown with such depressions in each of the two faces of the nut, for the purpose of reversing the nut, so that either face may be used 3 represents the bolt, to which the nut is attached, the head of the bolt being shown with depressions cut or pressed in its inner face, as shown at 4, in the s i 9 manner as the depressions in the face of the nut.

5 represents any parts through which the bolt passes to secure them together.

6 represents a split locking ring, or spring washer,-

in connection with the spring washer, or locking ring.

washer is increased in thickness at the face near the point, as shown at 8, to fit the depression in the face of the nut, there always being an open space between the opposite face of the washer, near the end, and the part in contact with the washer. as shown at 9, which prevents the faces of the washer being pressed together the washer, owing to the snug fit of the free end thereof in the depression in the nut, is turned with the nut and when said nut reaches its final position the sharp lip 10 on the other end of the washer, will engage the members being clamped and hold the nut in this position so that said nut cannot be turned in either direction on said bolt without turning with it the wash or. The thickened end of the washer also serves to hold the end of the same in engagement with the nut so that when the nut is in its final clamping position, it

is practically impossible to spring the free end of the washer out .of engagement with the nut so as to release the nut.

When the nut is screwed up close against the washer 6, the point {of the washer 6 next to the nut springs into the depression in the face of the nut; then any pressure against the nut in a direction that would have a tend-' ency to turn the nut off the bolt, whether caused by a jarring or tremulous motion, or otherwise, would only move the washer 6 with the nut, and cause the point shown at 10,to cut deeper into the surface and effectually lock the nut on the bolt; and will also cause the inner edge of the end of the washer 6 to press against the bolt, which is shown at 11, in Fig, 2 of the drawingf thus giving a locking contact with the washer 6 at three separate points, which is shown between the point of the washer 6 and the nut at 2, between the other point of the washer 6 and the surface opposite, shown at 10, and between the inner edge of the end of the washer 6 and the bolt as shown at 11.

It is obvious that either a right hand thread bolt and nut, or a left hand thread bolt and nut can be used, the depressions in the one being reverse from the other; but with a right hand nut, a left hand washer is used, and with a left hand nutya right hand washer is used.

Where machine bolts are used, and the surface of the parts secured together is very smooth and hard,- one of these spring washers may be used between the head of the bolt and the parts secured together, as

By forming the end of the 65 shown at 12. It is also obvious that thesaid washer shown at 12, operatesin practically the same manner as theiwasher shown at 6, to lock together the bolt and the'parts through which the bolt passes." In referring to the drawings it is evidently plain to be seen that, if an ordinary nut, with a plain smooth face is used, the result, or effect, will be practically I am aware that devices fonlocking. nuts on bolts 1 I v have been made wherein the nut is constructed with ratchet shaped notches or depressions in the face of .the nut and that open spring washershave been used, but I am not aware that a nut and bolt lock has ever been made as herein shown and described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

A bolt and nut loci: including in combination a, bolt, a nut disposed on said bolt, said nut' having a depression in its face forming a locking lip, means for locking said having enlarged portions extending beyond the plane of their" upper and lower faces, said ends being cut at an acute angle thereby forming a sharp engaging lip, the enlargement on one end of said washer conforming in shape to the depression in said nut, whereby said enlargement is held closely in contact with said nut and said nut is pre vented from movement in either direction without rotating said washer therewith.

In testimony whereof I aflix my signature in presence of two witnesses,

HENRY J. FISCHER. Witnesses;

C. D. SHMicK, P. C. TAPPING. 

